Calculating device



Aug. 13, 1946. w. F. CLEAVER CALCULATING DEVICE Filed May 14, 1945 2Sheets-Sheet l I/VVENT R' g K 7am,

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Patented Aug. 13, 1946 William F. Cleaver, Westmount, Quebec, CanadaApplication May 14, 1945, Serial No. 593,742 In Canada May 31, 1944 2Claims. 1

This invention relates to calculating devices and more particularly toproviding a machine whereby perforated time cards can be rapidly andaccurately extended to determine the amount of wages due the workman,for the elapsed time indicated by the perforations.

The device as set forth hereinafter can be adapted to function withother forms of prepared cards for a variety of purposes.

t The main object of the invention is to enable an operator to obtainaccurate and rapid equations in hours and minutes and dollars and centsrepresenting the wages due on the working time indicated by the holespierced in the card, thereby reducing to a minimum the time required toI prepare a correct statement of the wages due.

In the device shown and described provision is made for a six dayperiod. The device does not print the amount, but exposes on a dial thedaily total, computed for the operator to take down on an addingmachine. The device is shown in the accompanying drawings in which.

Figure 1 is a perspective View of the device.

Figure 2 is a vertical cross section.

Figure 3 is a horizontal cross section.

Figure 4 is a side View of one of the time rings.

Figure 5 shows surface markings on the time rings.

Figure 6 shows the dial slots in the rate drum, exposing the figures.

Figure '7 shows details of one of the operating handles.

Figure 8 shows a complete rate drum.

Figure 9 is an illustration of a time card perforated.

As seen in Figure 1, a base I I] has two side pedestals I5 supportingthe shaft 3. The ends of the shaft 3 are squared to fit into the slotsI6 and are held by latches I'I.

Mounted to rotate on the shaft 3 are six time rings 2, one for each day.The set of rings 2 are enclosed in a cylindrical light metal casing I Iforming a drum shaped housing Fig. 8, which is secured to the shaft 3.

This drum I I is provided with six slots 42 on its under side, thatpermit the racks 4 to travel through the drum and engage with the gears2 I. There are also six apertures I2 as shown in Fig, 6, for reading thedata on each time ring. Each drum II represents a specific rate of wagesper hour and is readily interchangeable on the calculator. Each timering 2 has a bushing inside and a gear 2| outside forming bearings.

The time rings 2 are connected to the shaft 3 by means of fiat spiralsprings 32, the inner end of the spring is held stationary to the shaftby means of pin 3|, the outer end of the spring is connected to pin 23on the inner side of the time ring wall. Pin 24 which is also connectedto the inner wall of the time ring 2 comes to rest against stationarypin on the shaft 3, under the pressure of the spring 32. This pin 30allows the time ring 2 to make one revolution. Racks 4 in verticalguides and 4| normally mesh with gears 2| when held up by a spring I2 tocontrolled bar I, which is journalled in bearings ID. A lever II at oneend of bar I provides means for lowering the bar I and releasing theracks 4 from the gears 2 I.

The forward ends of the racks 4 are pivoted to light metal rods 5 whichterminate in operating handles 6, having spring ball points 60. The rods5 have guides 5I. The handles 6 are adapted to travel in narrow slots I3in the casing I, situated directly above the columns with the holes 80perforated in the time card 8.

The time card 8 is inserted through an opening I4 in the end of thecasing I and comes to rest in the spring clips 8|. Its perforatedcolumns are then directly below slots I3, and this permits the ballpoints to press upon it and enter the holes 80.

The handles 6 have springs 6| in tubes 62 bearing on projecting balls 60which are adapted to enter the perforations in the time card 8.

Each rate drum Fig. 8 consists of six calculating rings 2 each ring isprinted on its outer sur face 25 as shown in Fig. 5, showing the elapsedtime and the equivalent dollars and cents represented by the rate ofthat particular drum. Any number of drums of various rates can be usedwith each calculator.

The supporting bar I which is operated by lever II is kept in a raisedposition by a spring I2. When this lever is pressed down the racks 4 aredisengaged from the gears 2 I, this allows the calculating rings 2 allto return t zero by means of the spring 32.

The time card, illustrated in Figure 9 of the drawings, is marked ed infifteen minute periods from seven a. m. to six p. m. the noon hour fromtwelve to one is omitted and all cards that punch out at twelve o'clockand in again at one o'clock are punched through the same hole-at bothtimes, and when the cards are so perforated and are extended, it is onlynecessary to use the starting and finishing hole in the card to get acomplete record for the day.

The method of operating the calculating machine is as follows: All thecards of the same rate are stacked together and valued, when the firststack is finished, the rate drum is changed for that of the next stackof cards of a difierent rate.

A card 8 is inserted in the slot l4 and pressed home between the springclips 8| where it is firmly held in proper position with its perforatedcolumns directly below the slots IS.

The handles 6 are drawn forward towards the operator until theirballpoints 60 enter the first perforations 80. The lever 1|is'then-lowered, which releases the racks 4 from the gears 2| permittingall the rings 2 to return to zero.

The handles 6 however remain over th perforations their ball points haveentered. Assoon as the lever H is released the bar I raises the racks 4to mesh with the gears 2 l The handles first and second perforations inthe columns of the cards.

The readings on the dials are taken down by the operator on an addingmachine, subsequent intervals are recorded in the same manner.

I claim:

1. In a device of the class specified, a series of drums rotatablymounted on a fixed shaft and having coil spring connections thereto,scales on the outer surface of the drums showing time intervals andequivalent wages at a given rate, gears on the shaft secured to eachdrum, racks adapted to mesh with the gears when contacted by a controlbar, pivoted extensions to the racks having terminal arms with ballpoints adapted to enter perforations in a time card inserted below aslotted casing in which the arms travel.

2. In a device of the class specified, a base having side pedestalssupporting a fixed shaft, a series of drums rotatably mounted on theshaft, coil springs connecting the drums to the shaft, gears on theshaft secured to each drum, racks under the gears, a control bar adaptedto mesh the racks with the gears, pivoted xtensions to the racks,

terminal arms to the extensions having ball points

